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gecko-dev/widget/xpwidgets/nsBaseWidget.h

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef nsBaseWidget_h__
#define nsBaseWidget_h__
#include "mozilla/WidgetUtils.h"
#include "nsRect.h"
#include "nsIWidget.h"
#include "nsWidgetsCID.h"
#include "nsIFile.h"
#include "nsString.h"
#include "nsCOMPtr.h"
#include "nsGUIEvent.h"
#include "nsAutoPtr.h"
#include "nsIRollupListener.h"
class nsIContent;
class nsAutoRollup;
class gfxContext;
namespace mozilla {
#ifdef ACCESSIBILITY
namespace a11y {
class Accessible;
}
#endif
namespace layers {
class BasicLayerManager;
class CompositorChild;
class CompositorParent;
}
}
namespace base {
class Thread;
}
/**
* Common widget implementation used as base class for native
* or crossplatform implementations of Widgets.
* All cross-platform behavior that all widgets need to implement
* should be placed in this class.
* (Note: widget implementations are not required to use this
* class, but it gives them a head start.)
*/
class nsBaseWidget : public nsIWidget
{
friend class nsAutoRollup;
protected:
typedef base::Thread Thread;
typedef mozilla::layers::BasicLayerManager BasicLayerManager;
typedef mozilla::layers::BufferMode BufferMode;
typedef mozilla::layers::CompositorChild CompositorChild;
typedef mozilla::layers::CompositorParent CompositorParent;
typedef mozilla::ScreenRotation ScreenRotation;
public:
nsBaseWidget();
virtual ~nsBaseWidget();
NS_DECL_ISUPPORTS
// nsIWidget interface
NS_IMETHOD CaptureMouse(bool aCapture);
virtual nsIWidgetListener* GetWidgetListener();
virtual void SetWidgetListener(nsIWidgetListener* alistener);
NS_IMETHOD Destroy();
NS_IMETHOD SetParent(nsIWidget* aNewParent);
virtual nsIWidget* GetParent(void);
virtual nsIWidget* GetTopLevelWidget();
virtual nsIWidget* GetSheetWindowParent(void);
virtual float GetDPI();
virtual void AddChild(nsIWidget* aChild);
virtual void RemoveChild(nsIWidget* aChild);
NS_IMETHOD SetZIndex(int32_t aZIndex);
NS_IMETHOD GetZIndex(int32_t* aZIndex);
NS_IMETHOD PlaceBehind(nsTopLevelWidgetZPlacement aPlacement,
nsIWidget *aWidget, bool aActivate);
NS_IMETHOD SetSizeMode(int32_t aMode);
NS_IMETHOD GetSizeMode(int32_t* aMode);
virtual nscolor GetForegroundColor(void);
NS_IMETHOD SetForegroundColor(const nscolor &aColor);
virtual nscolor GetBackgroundColor(void);
NS_IMETHOD SetBackgroundColor(const nscolor &aColor);
virtual nsCursor GetCursor();
NS_IMETHOD SetCursor(nsCursor aCursor);
NS_IMETHOD SetCursor(imgIContainer* aCursor,
uint32_t aHotspotX, uint32_t aHotspotY);
NS_IMETHOD GetWindowType(nsWindowType& aWindowType);
virtual void SetTransparencyMode(nsTransparencyMode aMode);
virtual nsTransparencyMode GetTransparencyMode();
virtual void GetWindowClipRegion(nsTArray<nsIntRect>* aRects);
NS_IMETHOD SetWindowShadowStyle(int32_t aStyle);
virtual void SetShowsToolbarButton(bool aShow) {}
virtual void SetShowsFullScreenButton(bool aShow) {}
virtual void SetWindowAnimationType(WindowAnimationType aType) {}
NS_IMETHOD HideWindowChrome(bool aShouldHide);
NS_IMETHOD MakeFullScreen(bool aFullScreen);
virtual nsDeviceContext* GetDeviceContext();
virtual LayerManager* GetLayerManager(PLayersChild* aShadowManager = nullptr,
LayersBackend aBackendHint = mozilla::layers::LAYERS_NONE,
LayerManagerPersistence aPersistence = LAYER_MANAGER_CURRENT,
bool* aAllowRetaining = nullptr);
virtual void CreateCompositor();
virtual void DrawWindowUnderlay(LayerManager* aManager, nsIntRect aRect) {}
virtual void DrawWindowOverlay(LayerManager* aManager, nsIntRect aRect) {}
virtual void UpdateThemeGeometries(const nsTArray<ThemeGeometry>& aThemeGeometries) {}
virtual gfxASurface* GetThebesSurface();
NS_IMETHOD SetModal(bool aModal);
NS_IMETHOD SetWindowClass(const nsAString& xulWinType);
NS_IMETHOD MoveClient(int32_t aX, int32_t aY);
NS_IMETHOD ResizeClient(int32_t aWidth, int32_t aHeight, bool aRepaint);
NS_IMETHOD ResizeClient(int32_t aX, int32_t aY, int32_t aWidth, int32_t aHeight, bool aRepaint);
NS_IMETHOD GetBounds(nsIntRect &aRect);
NS_IMETHOD GetClientBounds(nsIntRect &aRect);
NS_IMETHOD GetScreenBounds(nsIntRect &aRect);
NS_IMETHOD GetNonClientMargins(nsIntMargin &margins);
NS_IMETHOD SetNonClientMargins(nsIntMargin &margins);
virtual nsIntPoint GetClientOffset();
NS_IMETHOD EnableDragDrop(bool aEnable);
NS_IMETHOD GetAttention(int32_t aCycleCount);
virtual bool HasPendingInputEvent();
NS_IMETHOD SetIcon(const nsAString &anIconSpec);
NS_IMETHOD BeginSecureKeyboardInput();
NS_IMETHOD EndSecureKeyboardInput();
NS_IMETHOD SetWindowTitlebarColor(nscolor aColor, bool aActive);
virtual void SetDrawsInTitlebar(bool aState) {}
virtual bool ShowsResizeIndicator(nsIntRect* aResizerRect);
virtual void FreeNativeData(void * data, uint32_t aDataType) {}
NS_IMETHOD BeginResizeDrag(nsGUIEvent* aEvent, int32_t aHorizontal, int32_t aVertical);
NS_IMETHOD BeginMoveDrag(nsMouseEvent* aEvent);
virtual nsresult ActivateNativeMenuItemAt(const nsAString& indexString) { return NS_ERROR_NOT_IMPLEMENTED; }
virtual nsresult ForceUpdateNativeMenuAt(const nsAString& indexString) { return NS_ERROR_NOT_IMPLEMENTED; }
NS_IMETHOD ResetInputState() { return NS_OK; }
NS_IMETHOD CancelIMEComposition() { return NS_OK; }
NS_IMETHOD SetLayersAcceleration(bool aEnabled);
virtual bool GetLayersAcceleration() { return mUseLayersAcceleration; }
virtual bool ComputeShouldAccelerate(bool aDefault);
NS_IMETHOD GetToggledKeyState(uint32_t aKeyCode, bool* aLEDState) { return NS_ERROR_NOT_IMPLEMENTED; }
NS_IMETHOD OnIMEFocusChange(bool aFocus) { return NS_ERROR_NOT_IMPLEMENTED; }
NS_IMETHOD OnIMETextChange(uint32_t aStart, uint32_t aOldEnd, uint32_t aNewEnd) { return NS_ERROR_NOT_IMPLEMENTED; }
NS_IMETHOD OnIMESelectionChange(void) { return NS_ERROR_NOT_IMPLEMENTED; }
virtual nsIMEUpdatePreference GetIMEUpdatePreference() { return nsIMEUpdatePreference(false, false); }
NS_IMETHOD OnDefaultButtonLoaded(const nsIntRect &aButtonRect) { return NS_ERROR_NOT_IMPLEMENTED; }
NS_IMETHOD OverrideSystemMouseScrollSpeed(int32_t aOriginalDelta, bool aIsHorizontal, int32_t &aOverriddenDelta);
virtual already_AddRefed<nsIWidget>
CreateChild(const nsIntRect &aRect,
nsDeviceContext *aContext,
nsWidgetInitData *aInitData = nullptr,
bool aForceUseIWidgetParent = false);
NS_IMETHOD AttachViewToTopLevel(bool aUseAttachedEvents, nsDeviceContext *aContext);
virtual nsIWidgetListener* GetAttachedWidgetListener();
virtual void SetAttachedWidgetListener(nsIWidgetListener* aListener);
NS_IMETHOD RegisterTouchWindow();
NS_IMETHOD UnregisterTouchWindow();
void NotifyWindowDestroyed();
void NotifySizeMoveDone();
// Should be called by derived implementations to notify on system color and
// theme changes.
void NotifySysColorChanged();
void NotifyThemeChanged();
void NotifyUIStateChanged(UIStateChangeType aShowAccelerators,
UIStateChangeType aShowFocusRings);
#ifdef ACCESSIBILITY
// Get the accessible for the window.
mozilla::a11y::Accessible* GetAccessible();
#endif
nsPopupLevel PopupLevel() { return mPopupLevel; }
virtual nsIntSize ClientToWindowSize(const nsIntSize& aClientSize)
{
return aClientSize;
}
// return true if this is a popup widget with a native titlebar
bool IsPopupWithTitleBar() const
{
return (mWindowType == eWindowType_popup &&
mBorderStyle != eBorderStyle_default &&
mBorderStyle & eBorderStyle_title);
}
NS_IMETHOD ReparentNativeWidget(nsIWidget* aNewParent) = 0;
virtual uint32_t GetGLFrameBufferFormat() MOZ_OVERRIDE;
virtual const SizeConstraints& GetSizeConstraints() const;
virtual void SetSizeConstraints(const SizeConstraints& aConstraints);
/**
* Use this when GetLayerManager() returns a BasicLayerManager
* (nsBaseWidget::GetLayerManager() does). This sets up the widget's
* layer manager to temporarily render into aTarget.
*
* |aNaturalWidgetBounds| is the un-rotated bounds of |aWidget|.
* |aRotation| is the "virtual rotation" to apply when rendering to
* the target. When |aRotation| is ROTATION_0,
* |aNaturalWidgetBounds| is not used.
*/
class AutoLayerManagerSetup {
public:
AutoLayerManagerSetup(nsBaseWidget* aWidget, gfxContext* aTarget,
BufferMode aDoubleBuffering,
ScreenRotation aRotation = mozilla::ROTATION_0);
~AutoLayerManagerSetup();
private:
nsBaseWidget* mWidget;
};
friend class AutoLayerManagerSetup;
class AutoUseBasicLayerManager {
public:
AutoUseBasicLayerManager(nsBaseWidget* aWidget);
~AutoUseBasicLayerManager();
private:
nsBaseWidget* mWidget;
};
friend class AutoUseBasicLayerManager;
nsWindowType GetWindowType() { return mWindowType; }
virtual bool UseOffMainThreadCompositing();
static nsIRollupListener* GetActiveRollupListener();
protected:
virtual void ResolveIconName(const nsAString &aIconName,
const nsAString &aIconSuffix,
nsIFile **aResult);
virtual void OnDestroy();
virtual void BaseCreate(nsIWidget *aParent,
const nsIntRect &aRect,
nsDeviceContext *aContext,
nsWidgetInitData *aInitData);
virtual nsIContent* GetLastRollup()
{
return mLastRollup;
}
virtual nsresult SynthesizeNativeKeyEvent(int32_t aNativeKeyboardLayout,
int32_t aNativeKeyCode,
uint32_t aModifierFlags,
const nsAString& aCharacters,
const nsAString& aUnmodifiedCharacters)
{ return NS_ERROR_UNEXPECTED; }
virtual nsresult SynthesizeNativeMouseEvent(nsIntPoint aPoint,
uint32_t aNativeMessage,
uint32_t aModifierFlags)
{ return NS_ERROR_UNEXPECTED; }
virtual nsresult SynthesizeNativeMouseMove(nsIntPoint aPoint)
{ return NS_ERROR_UNEXPECTED; }
virtual nsresult SynthesizeNativeMouseScrollEvent(nsIntPoint aPoint,
uint32_t aNativeMessage,
double aDeltaX,
double aDeltaY,
double aDeltaZ,
uint32_t aModifierFlags,
uint32_t aAdditionalFlags)
{ return NS_ERROR_UNEXPECTED; }
// Stores the clip rectangles in aRects into mClipRects. Returns true
// if the new rectangles are different from the old rectangles.
bool StoreWindowClipRegion(const nsTArray<nsIntRect>& aRects);
virtual already_AddRefed<nsIWidget>
AllocateChildPopupWidget()
{
static NS_DEFINE_IID(kCPopUpCID, NS_CHILD_CID);
nsCOMPtr<nsIWidget> widget = do_CreateInstance(kCPopUpCID);
return widget.forget();
}
BasicLayerManager* CreateBasicLayerManager();
nsPopupType PopupType() const { return mPopupType; }
void NotifyRollupGeometryChange()
{
// XULPopupManager isn't interested in this notification, so only
// send it if gRollupListener is set.
if (gRollupListener) {
gRollupListener->NotifyGeometryChange();
}
}
/**
* Apply the current size constraints to the given size.
*
* @param aWidth width to constrain
* @param aHeight height to constrain
*/
void ConstrainSize(int32_t* aWidth, int32_t* aHeight) const
{
*aWidth = NS_MAX(mSizeConstraints.mMinSize.width,
NS_MIN(mSizeConstraints.mMaxSize.width, *aWidth));
*aHeight = NS_MAX(mSizeConstraints.mMinSize.height,
NS_MIN(mSizeConstraints.mMaxSize.height, *aHeight));
}
virtual CompositorChild* GetRemoteRenderer() MOZ_OVERRIDE;
protected:
/**
* Starts the OMTC compositor destruction sequence.
*
* When this function returns, the compositor should not be
* able to access the opengl context anymore.
* It is safe to call it several times if platform implementations
* require the compositor to be destroyed before ~nsBaseWidget is
* reached (This is the case with gtk2 for instance).
*/
void DestroyCompositor();
nsIWidgetListener* mWidgetListener;
nsIWidgetListener* mAttachedWidgetListener;
nsDeviceContext* mContext;
nsRefPtr<LayerManager> mLayerManager;
nsRefPtr<LayerManager> mBasicLayerManager;
nsRefPtr<CompositorChild> mCompositorChild;
nsRefPtr<CompositorParent> mCompositorParent;
nscolor mBackground;
nscolor mForeground;
nsCursor mCursor;
nsWindowType mWindowType;
nsBorderStyle mBorderStyle;
bool mUseLayersAcceleration;
bool mForceLayersAcceleration;
bool mTemporarilyUseBasicLayerManager;
bool mUseAttachedEvents;
bool mContextInitialized;
nsIntRect mBounds;
nsIntRect* mOriginalBounds;
// When this pointer is null, the widget is not clipped
nsAutoArrayPtr<nsIntRect> mClipRects;
uint32_t mClipRectCount;
int32_t mZIndex;
nsSizeMode mSizeMode;
nsPopupLevel mPopupLevel;
nsPopupType mPopupType;
SizeConstraints mSizeConstraints;
static nsIRollupListener* gRollupListener;
// the last rolled up popup. Only set this when an nsAutoRollup is in scope,
// so it can be cleared automatically.
static nsIContent* mLastRollup;
#ifdef DEBUG
protected:
static nsAutoString debug_GuiEventToString(nsGUIEvent * aGuiEvent);
static bool debug_WantPaintFlashing();
static void debug_DumpInvalidate(FILE * aFileOut,
nsIWidget * aWidget,
const nsIntRect * aRect,
const nsAutoCString & aWidgetName,
int32_t aWindowID);
static void debug_DumpEvent(FILE * aFileOut,
nsIWidget * aWidget,
nsGUIEvent * aGuiEvent,
const nsAutoCString & aWidgetName,
int32_t aWindowID);
static void debug_DumpPaintEvent(FILE * aFileOut,
nsIWidget * aWidget,
const nsIntRegion & aPaintEvent,
const nsAutoCString & aWidgetName,
int32_t aWindowID);
static bool debug_GetCachedBoolPref(const char* aPrefName);
#endif
};
// A situation can occur when a mouse event occurs over a menu label while the
// menu popup is already open. The expected behaviour is to close the popup.
// This happens by calling nsIRollupListener::Rollup before the mouse event is
// processed. However, in cases where the mouse event is not consumed, this
// event will then get targeted at the menu label causing the menu to open
// again. To prevent this, we store in mLastRollup a reference to the popup
// that was closed during the Rollup call, and prevent this popup from
// reopening while processing the mouse event.
// mLastRollup should only be set while an nsAutoRollup is in scope;
// when it goes out of scope mLastRollup is cleared automatically.
// As mLastRollup is static, it can be retrieved by calling
// nsIWidget::GetLastRollup on any widget.
class nsAutoRollup
{
bool wasClear;
public:
nsAutoRollup();
~nsAutoRollup();
};
#endif // nsBaseWidget_h__
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